See, priapulids have heads that are lined with tiny barbs.

看，priapulids 的头上排列着小倒钩。

We've found nice, full-body fossils of priapulids like Ottoia in the Burgess Shale.

我们在伯吉斯页岩中发现了像 Ottoia 这样的 priapulids 的漂亮全身化石。

Communities of priapulids and other similar organisms changed the seafloor from hard matgrounds to the softer sediment found in the Cambrian.

priapulids 和其他类似生物群落将海底从坚硬的地垫变为寒武纪较软的沉积物。